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M03107GE ~ • proposed Coal Processing Facility site is located adjacent to the northeast of the coal stockpile pad and northwest of the mine engineering office. A project vicinity map is presented on Figure 1. 2.2 Site Conditions The proposed Coal Processing Facility site slopes down to the south at an inclination of about three (3) to four (4) to one (1). The proposed processing facility site contains a cover of juniper and pinion trees. An existing power line crosses the proposed site near the center of the site and is oriented northwest to southeast. An existing haul road is located along the south edge of the proposed site. 2.3 Subsurface Conditions The subsurface exploration consisted of observing, describing and sampling the soil materials encountered in three (3) auger advanced test borings. The approximate locations of the test borings are shown on Figure 2. The site conditions restricted the location and number of test borings. The logs describing the soil materials encountered in the test borings are presented in Appendix A. , The soil materials encountered in the test borings consisted generally of silty and sandy clay with cobbles and boulders. The • silty and sandy clay soils tested have a moderate swell potential when wetted and may consolidate under moderate loading conditions. No formational material was encountered in the test borings to a depth of about thirty (30) feet, the maximum depth explored. Auger refusal on cobbles and boulder material was encountered in the test borings at depths of about fifteen (15) to thirty (30) feet. No free subsurface water was encountered in the test borings at the time of our field study. We anticipate that the free sub- surface water elevation may fluctuate with seasonal and other varying conditions. It is difficult to predict if unexpected subsurface conditions will be encountered during construction. Since such conditions may be found, we suggest that. the owner and the contractor make provi- sions in their budget and construction schedule to accommodate unexpected subsurface conditions. u 3 Lambert anD ~,o~s'oeiates CONSULTING GEOTECN NICAL ENGINEERS ANO MATERIAL TESTING